Update dependency org.eclipse.jetty:jetty-maven-plugin to v9.4.28.v20200408 (#641)
Update dependency org.eclipse.jetty:jetty-maven-plugin to v9.4.28.v20200408 (#641)


GoogleCloudPlatform/getting-started-java,GoogleCloudPlatform/getting-started-java,GoogleCloudPlatform/getting-started-java